# Athletic Dynamics vs Nine Under

Athletic Dynamics and Nine Under are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Athletic Dynamics ships an update every 9 months, Nine Under every 13 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Athletic Dynamics | Nine Under |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 13 months |
| Size | 40 MB | 40 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Athletics Dynamics, PC](https://appshunter.io/developer/1758790024) | [Joseph Terrill](https://appshunter.io/developer/1822564454) |

## What reviewers say

### Athletic Dynamics

[App page](https://appshunter.io/ios/app/athletic-dynamics/id6569184002)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Nine Under

[App page](https://appshunter.io/ios/app/nine-under-golf-performance/id6747715753)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Athletic Dynamics free?

Athletic Dynamics is free to download, with no in-app purchases.

### Is Nine Under free?

Nine Under is free to download, with no in-app purchases.

### Do Athletic Dynamics or Nine Under have ads?

Neither Athletic Dynamics nor Nine Under shows ads.

### Which is updated more often, Athletic Dynamics or Nine Under?

Athletic Dynamics ships an update every 9 months, and Nine Under every 13 months. Most recently, Athletic Dynamics was updated on October 13, 2026 and Nine Under on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*